fix compiler warning

Fixes some more out of memory handling bugs.

Suppress the "'convbuf' might be used uninitialized in this function" warning.

- David McCreedy made changes to allow base64 encoding/decoding to work on
non-ASCII platforms.

Avoid typecasting a signed char to an int when using is*() functions, as that
could very well cause a negate number get passed in and thus cause reading
outside of the array usually used for

Avoid typecasting a signed char to an int when using is*() functions, as that
could very well cause a negate number get passed in and thus cause reading
outside of the array usually used for this purpose.

We avoid this by using the uppercase macro versions introduced just now that
does some extra crazy typecasts to avoid byte codes > 127 to cause negative
int values.

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Fix compiler warnings

Updated the copyright year since changes have been this year.

Fix for a base64 decode heap buffer overflow vulnerability.

Curl_base64_decode() now returns an allocated buffer

Add 'const' to immutable arrays.

Replaced all uses of sprintf() with the safer snprintf(). It is just a
precaution to prevent mistakes to lead to buffer overflows.

make sure the returned pointer is NULL when encoding fails

curl_global_init_mem() allows the memory functions to be replaced.
memory.h is included everywhere for this.

removed an unnecessary shift and splut up som weird two-statements-per-line
code

oops, the decode() function got its arguments reversed in my cleanup
operation!

More size_t cleanups in the base64 functions.

The base64 encode function now takes a size_t for size, not an int as
previously.

updated year in the copyright string

We noe use CURLDEBUG instead of MALLOCDEBUG

made a nicer output for the decode test, as it served as a nice tool for me ;-)

Initial take at NTLM authentication. It doesn't really work at this point
but the infrastructure is there.

Christopher R. Palmer fixed Curl_base64_encode() to deal with zeroes in the
data to encode.

removed the local variables for emacs and vim, use the new sample.emacs
way for emacs, and vim users should provide a similar non-polluting style

copyright year update in the source header

proper indent