[coreboot-gerrit] Patch merged into coreboot/master: Make Ada a first class citizen

the following patch was just integrated into master:
commit 2e09d2b239ff2dfdba89011fd64d9a07da0d8717
Author: Nico Huber 
Date:   Thu Jan 14 01:13:33 2016 +0100

Make Ada a first class citizen

Some remarks on the make process:
      o We usually leave Ada specs (.ads files which are like c headers)
        together with the bodies (implementations in .adb files) in one
        directory. So we have to know, where they live.
      o If there is no matching .adb an .ads is a valid source file and
        we'll generate an object file from it.
      o Object files need to have the same basename as their source files :-/
        That's why we put them in build/<class>/ dirs now.
      o We track dependencies by looking at the compiler output (.ali files
        which accompany every .o). This way we don't need any gnatmake
        magic, or even more complex, less portable tools.

For ADAFLAGS_common, I simply copied the CFLAGS_common whilst dropping
    everything unsupported and adding sane warning options.

The set of language features is highly restricted (see gnat.adc). This
    should suit the embedded nature of coreboot and helps proving absence
    of runtime errors with SPARK.

Change-Id: I70df9adbd467ecd2dc7c5c1cf418b7765aca4e93
    Signed-off-by: Nico Huber 
    Reviewed-on: https://review.coreboot.org/13044
    Tested-by: build bot (Jenkins)
    Reviewed-by: Stefan Reinauer 
    Reviewed-by: Edward O'Callaghan

See https://review.coreboot.org/13044 for details.

-gerrit