[dmd-internals] master branch brokenness

[Brad Roberts]

Well, it's the middle of another release, and pretty much on schedule, the master branch is in pretty bad shape.  Why
does this happen every time?

As of this commit:

commit 29eb972a2f329276a72a19e722671ff26bfe8534
Author: Walter Bright <walter at walterbright.com>
Date:   Wed May 9 13:21:41 2012 -0700

    more 64 bit ABI for structs

the freebsd 32 bit phobos tests have failed with:

gmake[1]: *** [generated/freebsd/debug/32/unittest/std/datetime] Segmentation fault: 11 (core dumped)


The osx 64 bit build hasn't passed since 5/6.  It's changed failure modes a couple times.  The most recent set is in the
regexp phobos tests:

core.exception.AssertError at std/regex.d(7181): bmatch(R,RegEx) if (isSomeString!(R) && is(RegEx ==
Regex!(BasicElementOf!(R)))): failed to match pattern #204: \b\w+\b
----------------
5   regex                               0x000000010ddae347 _d_assert_msg + 31
6   regex                               0x000000010dd20852 void std.regex.__unittest8().void
__T9run_testsS173std5regex6bmatchZ.run_tests() + 87262
7   regex                               0x000000010dc7cb20 void std.regex.__unittest8() + 12
8   regex                               0x000000010dc782bc void std.regex.__modtest() + 24
9   regex                               0x000000010dda27f8 extern (C) bool core.runtime.runModuleUnitTests().int
__foreachbody279(ref object.ModuleInfo*) + 48
10  regex                               0x000000010ddb421e int rt.minfo.moduleinfos_apply(scope int delegate(ref
object.ModuleInfo*)) + 74
11  regex                               0x000000010dda26c2 runModuleUnitTests + 134
12  regex                               0x000000010ddaecf6 extern (C) int rt.dmain2.main(int, char**).void runAll() + 34
13  regex                               0x000000010ddae676 extern (C) int rt.dmain2.main(int, char**).void tryExec(scope
void delegate()) + 38
14  regex                               0x000000010ddae601 main + 237
15  regex                               0x000000010dc78294 start + 52
16  ???                                 0x0000000000000001 0x0 + 1
make[1]: *** [generated/osx/debug/64/unittest/std/regex] Error 1
make[1]: *** Waiting for unfinished jobs....
make: *** [unittest] Error 2