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(-)

1 files changed, 1 insertions, 4 deletions

diff --git a/scripts/build/debug/200-duma.sh b/scripts/build/debug/200-duma.sh
index bdb92a6..7a98c3c 100644
--- a/scripts/build/debug/200-duma.sh
+++ b/scripts/build/debug/200-duma.sh
@@ -16,15 +16,12 @@ do_debug_duma_get() {
 
 do_debug_duma_extract() {
     CT_ExtractAndPatch "duma-${CT_DUMA_VERSION}"
-    cd "${CT_SRC_DIR}"
-    rm -f "duma-${CT_DUMA_VERSION}"
-    ln -sf "duma_${CT_DUMA_VERSION}" "duma-${CT_DUMA_VERSION}"
 }
 
 do_debug_duma_build() {
     CT_DoStep INFO "Installing D.U.M.A."
     CT_DoLog EXTRA "Copying sources"
-    cp -a "${CT_SRC_DIR}/duma_${CT_DUMA_VERSION}" "${CT_BUILD_DIR}/build-duma"
+    cp -a "${CT_SRC_DIR}/duma-${CT_DUMA_VERSION}" "${CT_BUILD_DIR}/build-duma"
     CT_Pushd "${CT_BUILD_DIR}/build-duma"
 
     DUMA_CPP=