maintainer/ new directory dedicated to maintainer tools
Move run-autogen.sh to maintainer/ directory
Move run-distcheck.sh to maintainer/ directory
Move tools/check-po.sh to maintainer/ directory
Move tools/check-headers.sh to maintainer/ directory
Create maintainer/Makefile.am
Makefile.am & configure.ac are updated accordingly
Creates maintainer/.gitignore
Rename m4 compiler macros to NA_COMPILER_xxx
Rename m4 maintainer macros to NA_MAINTAINER_xxx
Review m4 GConf check macro behavior
Review m4 module check behavior
Review m4 Gtk check behavior
Improve GDBus selection messages m4 macro
Fixing configure.ac
Fixing check-headers.sh