Fixed a serious bug/memory 'leak' in Synchronizer that only happens when audio is disabled.

The cause was an uninitialized variable that was being used to calculate the size of a buffer. Found with Valgrind.
New version.
Merge branch 'master' into jack
More resampler code (still not ready).
Added more configure options and removed CPPFLAGS defines.
Merge branch 'master' into jack

Conflicts:
	src/GUI/PageInput.cpp
	src/GUI/PageInput.h
	src/GUI/PageRecord.cpp
	src/GUI/PageRecord.h
	src/Global.h
	src/Makefile.am
	src/Makefile.in