Add release for better switching
Fix some issues found by -Werror
Use CFLAGS to set -Werror for build
Move sysconfdir to /etc/opt for FHS compliance
Let configure work with --enable-debug, fix pmi
Fix readline support, add debug info to CFLAGS
Unversion sysconfdir, add RPM_OPT_FLAGS to CFLAGS
Move pthread file to its new name