Revert "python: Rename build related code to ovs_build_helpers." #85

Job	Run time
dpdk gcc	3m 24s
osx clang --disable-ssl	3m 57s
linux deb no dpdk	8m 46s
linux gcc --disable-ssl	3m 14s
linux clang --disable-ssl	3m 6s
linux gcc c99	2m 29s
linux clang c99	3m 11s
linux gcc test	3m 15s
linux clang test asan	4m 14s
linux clang test ubsan	4m 41s
linux gcc test --enable-shared	4m 11s
linux clang test --enable-shared	4m 18s
linux gcc test dpdk	4m 31s
linux clang test dpdk	4m 7s
linux gcc test -ljemalloc	3m 55s
linux clang test -ljemalloc	3m 15s
linux gcc --enable-afxdp	2m 35s
linux clang --enable-afxdp	2m 35s
linux gcc dpdk --enable-shared	3m 56s
linux clang dpdk --enable-shared	3m 30s
linux gcc dpdk-shared	4m 4s
linux clang dpdk-shared	2m 51s
linux gcc dpdk-shared --enable-shared	3m 55s
linux clang dpdk-shared --enable-shared	3m 20s
linux gcc m32 --disable-ssl	2m 42s
	1h 34m 2s

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