pgsql: Additional fixes for parallel make

Additional fixes for parallel make

Add some additional dependencies to constrain the build order to prevent
parallel make from failing. In the case of src/Makefile, this is likely to be
too complicated to be worth maintaining, so just add .NOTPARALLEL to get the
old for-loop-like behavior.

More fine-tuning might be necessary for some platforms or configurations.

Branch
------
master

Details
-------
http://git.postgresql.org/gitweb?p=postgresql.git;a=commitdiff;h=cfad144f894b306fc300f5d03ea52a32d4624db0

Modified Files
--------------
src/Makefile | 4 ++++
src/interfaces/Makefile | 2 ++
src/interfaces/ecpg/Makefile | 3 ++-
3 files changed, 8 insertions(+), 1 deletions(-)