Revert "eina: improve portability of Eina_File."

Revert "eina: improve portability of Eina_File."

This reverts commit c002d113f11310b5367bfcd300c0add84bf6f57f.

This commit reliably breaks builds with clang. Please test with
export CC=clang before you commit again.

export CC=clang
./autogen.sh --enable-multisense && make -j 10

The error Jenkins gets (I confirmed locally):

/bin/bash: line 1: 13549 Segmentation fault      (core dumped) EFL_RUN_IN_TREE=1 ./bin/edje/edje_cc -id . -fd . -id ./tests/emotion/data tests/emotion/data/theme.edc tests/emotion/data/theme.edj