Allow broader dependency in generated config files:
- recognise '^# depends on ' pattern in config files
- use that pattern to generate appropriate dependency rules
- convert users of the old pattern to the new one

/branches/newlib/config/libc/eglibc.in | 2 1 1 0 +-
/branches/newlib/config/config.mk | 20 8 12 0 ++++++++------------
/branches/newlib/config/arch/sh.in | 2 1 1 0 +-
/branches/newlib/config/arch/ia64.in | 2 1 1 0 +-
/branches/newlib/config/arch/powerpc64.in | 2 1 1 0 +-
5 files changed, 12 insertions(+), 16 deletions(-)

 # powerpc specific configuration file

 # depends on EXPERIMENTAL

 config ARCH_powerpc64

     select ARCH_64

     select ARCH_SUPPORT_ABI

     select ARCH_SUPPORT_CPU

     select ARCH_SUPPORT_TUNE

     help

       The PowerPC architecture, as defined by:

         http://www.ibm.com/developerworks/eserver/articles/archguide.html