Committing trivial changes

[Roland Illig]

Hi,

I'd like to commit some changes that convert many declarations of "char 
*" into "const char *". The latter is nicer because you can assume that 
the declared string will not be accidentally modified. This is 
especially important when passing string literals to functions or 
storing them in variables, as they may be placed in read-only memory. To 
distinguish read-write usage from read-only usage, strings which are not 
written to should be declared as "const char *".

Lately, Pavel banned me from doing these changes because mc-4.6.1 will 
be released soon, but I would nevertheless like to commit these, as they 
improve the code quality and also help me find memory leaks.

The changes will only affect the declarations of functions, not the code 
itself, as far as I know the C language. (And I know it quite well.) 
During this phase, I will not commit any changes to the code.

May I?

Roland