ARMC5_BIN_DIR and ARMC6_BIN_DIR were set in pre_parse_command_line() and used
by support_build_armcc() which is called by pre_initialize_variables() to
determines SUPPORTED_COMPONENTS.
As pre_initialize_variables() is called before pre_parse_command_line(),
support_build_armcc() failed to use the directories set on the command line.
However, we can't call pre_parse_command_line() before pre_initialize_variables()
since the former needs SUPPORTED_COMPONENTS!
Fix the circular dependency by parsing the command line twice, with the first
pass only to get these directories.
Signed-off-by: Tom Cosgrove <tom.cosgrove@arm.com>
730addc203