Fix gcc -Wall nits

Use char * instead of void * for arithmetic pointers

Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Update base to 07bcd90f3dab9a7907081dc455e089f92b9dd0a1
fix gcc -Wall nits

Use char * not void * for arithmetic pointer operations
Fix gcc -Wall nits

Fixed signed vs. unsigned complaints; fix void * pointer arithmatic issues