LDC 0.11.0 release process

[David Nadlinger]

Looks a little better with PIC enabled:

———
	1500 - phobos_std_file_release_run (SEGFAULT)
	1596 - phobos_std_parallelism_release_run (SEGFAULT)
	1806 - phobos_std_variant_debug_32_run (Failed)
	1808 - phobos_std_variant_release_32_run (Failed)
	2098 - dmd-testsuite_debug (Failed)
	2100 - dmd-testsuite_release (Failed)
	2102 - dmd-testsuite_debug_32 (Failed)
	2104 - dmd-testsuite_release_32 (Failed)
———

The test suite failures might not all be real, due to the 
annoying output file name clash issue for the d_do_test unit 
tests (need to do something about this).

David