- with an eye to using them also for LALApps in the future
- move basic build code to build_common.am
- keep only build code that only makes sense at top in topdir_common.am
- move pkg-config file specification to Makefile.am (not in LALApps)
- move extra preprocessor flags to configure.ac (not all in LALApps)
- use top_{src,build}dir instead of {src,build}dir for clarity
- set up LAL_DATA_PATH and LAL_DEBUG_LEVEL for tests
Original: dd6e620f51a552d92122d93d40434e75d59b8f7e