Update apr-util to version 1.5.4
treec5d379ff187c703ae112b4890c328f889b0a5194
-rw-r--r-- 429 .gitignore
-rw-r--r-- 679 .gitmodules
-rw-r--r-- 224 .mailmap
-rw-r--r-- 255 .tgitconfig
drwxr-xr-x - Languages
-rw-r--r-- 2878 build.txt
drwxr-xr-x - contrib
drwxr-xr-x - doc
drwxr-xr-x - ext
-rw-r--r-- 952 release.txt
drwxr-xr-x - src
drwxr-xr-x - test