Qt4: Rename to pinentry-qt and add Qt5 Support
* qt4: Moved to qt. * Makefile.am: Change qt4 suffix to qt. * m4/qt.m4: Remove old qt lookup functions. (FIND_QT): New. Use pkg-config to find either Qt5 or Qt4 * configure.ac: Change qt4 suffix to qt. Use new FIND_QT function. * qt/Makefile.am: Change qt4 suffix to qt. Use new FLAGS / LIBS. * qt/pinentrydialog.cpp, qt/qrc_pinentry.cpp: Fix whitespace. * .gitignore: Change qt4 paths to qt. * README: Update accordingly. * autogen.rc: Change qt4 to qt. * qt/main.cpp (qt_cmd_handler, main): Change qt4 to qt.
Now if Qt5 is found with pkg-config Qt5 is used. Qt4 is still
supported as a fallback in case Qt5 is not found.
- GnuPG-bug-id: T1806
