Bug fixes & DL dependencies when specified

Solves #78 (closed) and #77 (closed) and #76 (closed)

Introduces a scripts/depends.bash $BUILD_FOLDER to download all dependencies to fix version numbers and avoid segfaults because the system was updated and version numbers changed.

You can use configure --with-depends to dl and build dependencies.

scripts/tags.bash

 #!/bin/sh
 
-find . -iname '*.c' -o -iname '*.h' > cscope.files
+find . -iname '*.c' -o -iname '*.h' | egrep -v '^\.\/depends' > cscope.files
 cscope -b -i cscope.files -f cscope.out
-ctags -R .
+ctags -R ./inc ./src