Sync up with flags understood by install(1) [1], and make install(1)'s
usage output not hide the clearly documented -M flag.
PR: misc/154739 [1]
Submitted by: arundel
options since revision 1.2, so removed the XXX comment now.
Fixed bogus test(1) expression that would be evaluated as a null
string test if script is run without arguments, compacted option
lists.
are ignored and the remaining is passed on to cp(1). This allows
a build to be run as non-root without forcing any user/group
setting and also prevents setting any file flags.
This may not be the right place for buildtools.
