Merge pull request #4241

Merge pull request #4241

efe6888 build: fix version dependency (Cory Fields)
f4d8112 build: quit abusing AM_CPPFLAGS (Cory Fields)
56c157d build: avoid the use of top_ and abs_ dir paths (Cory Fields)
70c71c5 build: Tidy up file generation output (Cory Fields)
6b9f0d5 build: nuke Makefile.include from orbit (Cory Fields)
8b09ef7 build: add stub makefiles for easier subdir builds (Cory Fields)
be4e9ae build: delete old Makefile.am's (Cory Fields)
65e8ba4 build: Switch to non-recursive make (Cory Fields)