Get rid of CT_LIBC_FILE, remove useless CT_MakeAbsolutePath.

CT_LIBC_FILE:
- that one was not easy, as it had sneaked into CT_ExtractAndPatch
- which in turn made CT_ExtractAndPatch have references to C library addons
- which in turn relieved the C library _extract functions from doing their own job
- which in turn imposed some nasty tricks in CT_ExtractAndPatch
- which in turn made life easier for the DUMA _get and _extract functions
- which unveiled some bizare behavior for pushd and popd:
- if using smthg ike: 'pushd foo |bar':
- the directory is *neither* changed
- *nor* is it pushed onto the stack
- which made popd fail

CT_MakeAbsolutePath:
- used only to make CT_LOCAL_TARBALLS_DIR canonical
- which is ((almost) useless:
- hopefully, the user entered a full path already
- if it's not the case, too bad...

/trunk/scripts/build/debug/200-duma.sh | 5 1 4 0 +--
/trunk/scripts/build/libc/glibc.sh | 61 32 29 0 +++++++++++++++++---------------
/trunk/scripts/build/libc/uClibc.sh | 16 10 6 0 +++++---
/trunk/scripts/build/libc/eglibc.sh | 48 26 22 0 ++++++++++++++-----------
/trunk/scripts/crosstool.sh | 8 0 8 0 ----
/trunk/scripts/functions | 77 15 62 0 ++++++++--------------------------------
6 files changed, 84 insertions(+), 131 deletions(-)

 # GMP options

 choice

     bool

     prompt "MPFR version"

 config MPFR_V_2_3_1

     bool

     prompt "2.3.1"

 config MPFR_V_2_3_2

     bool

     prompt "2.3.2"

 # CT_INSERT_VERSION_ABOVE

 # Don't remove above line!

 endchoice

 config MPFR_VERSION

     string

     default "2.3.1" if MPFR_V_2_3_1

     default "2.3.2" if MPFR_V_2_3_2

 # CT_INSERT_VERSION_STRING_ABOVE

 # Don't remove above line!

 config MPFR_CHECK

     bool

     prompt "Check MPFR"

     default y

     help

       It is highly recommended that 'make check' is run against the newly built

       MPFR library. See http://gmplib.org/