qqwing doesn't honor CC/CXX/CPP [1], resolve this by doing a major
overhaul. Which also simplies the port a bit, and gets rid of using
scripts the port supplies.

• Even if the old port defined CC/CXX/CPP, it was not actualy used. Due to the reason in the next point.
• Instead of using the port supplied script, which call ./configure and make install targets without any arguments and so. Copy the "special" voodoo into pre-configure and pre-build targets. Define GNU_CONFIGURE and use standard do-configure, do-build and do-install, since this ports uses autotools when it matters.
• Drag USE_GITHUB macros out the macro mess. Use autoreconf USES instead of having manual BUILD_DEPENDS lines.
• No more post-patch to fix the port supplied scripts, and no do-install since we leave that to autotools.
• Set PATHFIX_MAKEFILEIN to patch the Makefile.am file instead of the Makefile.in file due to us running autoreconf which overwrites the .in file (if it existed at all).
• Wrap lines
• USE_GNOME=glib introspection:build are not needed, so remove them.

PR: 202901 [1]
Reported by: Kenneth Salerno <kennethsalerno@yahoo.com> [1]