version specific build targets
Implement version specific build targets so that you can define functions pbuild::TARGET_VERSION
with
TARGET=pre_prep|prep|post_pre|pre_compile|compile|post_compile|pre_postinstall|postinstall|post_postinstall
and
VERSION=${V_MAJOR}.${V_MINOR}.${V_PATCHLVL}-${V_RELEASE}|${V_MAJOR}.${V_MINOR}.${V_PATCHLVL}|${V_MAJOR}.${V_MINOR}|${V_MAJOR}