qmake: generated Libs.private in .pc files incorrectly uses debug suffix

Name: Qt5 Sql                                                                                                                                                                                                                           
Description: Qt Sql module                                                                                                                                                                                                              
Version: 5.0.2                                                                                                                                                                                                                          
Libs: -L${libdir} -lQt5Sql                                                                                                                                                                                                              
Libs.private: -LC:\mingw47\lib -LC:\binaries\icu-mingw-builds-32\lib -LC:\openssl\lib -LQ:/qt5_workdir/w/s/qtbase/lib -lQt5Cored .obj\debug_shared\Qt5Sqld_resource_res.o                                                               
Cflags: -I${includedir}/QtSql -I${includedir}                                                                                                                                                                                           
Requires: Qt5Core

DEBUG 1: /home/brand/projects/qtdev/qtbase-mxe/mkspecs/features/qt_functions.prf: entering block
DEBUG 2: evaluating expression
DEBUG 2: hashed literal "CONFIG"
DEBUG 2: evaluated expression => CONFIG
DEBUG 1: /home/brand/projects/qtdev/qtbase-mxe/mkspecs/features/qt_functions.prf:2: evaluating test function "CONFIG"
DEBUG 2: evaluating joined expression
DEBUG 2: new string
DEBUG 2: literal "debug"
DEBUG 2: evaluated expression => debug
DEBUG 2: evaluating joined expression
DEBUG 2: new string
DEBUG 2: literal "debug|release"
DEBUG 2: evaluated expression => debug debug|release
DEBUG 1: /home/brand/projects/qtdev/qtbase-mxe/mkspecs/features/qt_functions.prf:2: calling built-in CONFIG(debug, debug|release)
DEBUG 1: /home/brand/projects/qtdev/qtbase-mxe/mkspecs/features/qt_functions.prf:2: test function returned true
DEBUG 1: /home/brand/projects/qtdev/qtbase-mxe/mkspecs/features/qt_functions.prf:2: taking 'then' branch
DEBUG 1: /home/brand/projects/qtdev/qtbase-mxe/mkspecs/features/qt_functions.prf:2: entering block
DEBUG 1: /home/brand/projects/qtdev/qtbase-mxe/mkspecs/features/qt_functions.prf:3: NOT
DEBUG 2: evaluating expression
DEBUG 2: hashed literal "debug_and_release"
DEBUG 2: evaluated expression => debug_and_release
DEBUG 1: /home/brand/projects/qtdev/qtbase-mxe/mkspecs/features/qt_functions.prf:3: condition "debug_and_release" is true
DEBUG 1: /home/brand/projects/qtdev/qtbase-mxe/mkspecs/features/qt_functions.prf:3: OR
DEBUG 2: evaluating expression
DEBUG 2: hashed literal "build_pass"
DEBUG 2: evaluated expression => build_pass
DEBUG 1: /home/brand/projects/qtdev/qtbase-mxe/mkspecs/features/qt_functions.prf:3: condition "build_pass" is true
DEBUG 1: /home/brand/projects/qtdev/qtbase-mxe/mkspecs/features/qt_functions.prf:3: taking 'then' branch
DEBUG 1: /home/brand/projects/qtdev/qtbase-mxe/mkspecs/features/qt_functions.prf:3: entering block
DEBUG 2: evaluating expression
DEBUG 2: hashed literal "mac"
DEBUG 2: evaluated expression => mac
DEBUG 1: /home/brand/projects/qtdev/qtbase-mxe/mkspecs/features/qt_functions.prf:4: condition "mac" is false
DEBUG 1: /home/brand/projects/qtdev/qtbase-mxe/mkspecs/features/qt_functions.prf:4: AND
DEBUG 2: evaluating expression
DEBUG 2: new string
DEBUG 2: literal "_debug"
DEBUG 2: evaluated expression => _debug
DEBUG 1: /home/brand/projects/qtdev/qtbase-mxe/mkspecs/features/qt_functions.prf:4: skipped flow control statement 'return'
DEBUG 2: evaluating expression
DEBUG 2: hashed literal "win32"
DEBUG 2: evaluated expression => win32
DEBUG 1: /home/brand/projects/qtdev/qtbase-mxe/mkspecs/features/qt_functions.prf:5: condition "win32" is true
DEBUG 1: /home/brand/projects/qtdev/qtbase-mxe/mkspecs/features/qt_functions.prf:5: AND
DEBUG 2: evaluating expression
DEBUG 2: new string
DEBUG 2: literal "d"
DEBUG 2: evaluated expression => d
DEBUG 1: /home/brand/projects/qtdev/qtbase-mxe/mkspecs/features/qt_functions.prf:5: flow control statement 'return', aborting block
DEBUG 1: /home/brand/projects/qtdev/qtbase-mxe/mkspecs/features/qt_functions.prf:5: finished 'then' branch
DEBUG 1: /home/brand/projects/qtdev/qtbase-mxe/mkspecs/features/qt_functions.prf:5: aborting block, status: return
DEBUG 1: /home/brand/projects/qtdev/qtbase-mxe/mkspecs/features/qt_functions.prf:5: finished 'then' branch
DEBUG 1: /home/brand/projects/qtdev/qtbase-mxe/mkspecs/features/qt_functions.prf:5: aborting block, status: return
DEBUG 2: evaluated expression => Qt5Cored
DEBUG 2: assigning
DEBUG 1: /home/brand/projects/qtdev/qtbase-mxe/mkspecs/features/qt_functions.prf:108: lib := Qt5Cored