- Per user request

cov: 1038957, 1038955

cov:1038956

Conflicts:
	doc/running.texi

Refs #37

- Compilation warning fixed
- Constant with comment added
- Signed count removed
- Added missing header guards
- Changed output of estimation

Refs #37

Caused painfully slow AXFR when RRSIGs came before the covered RRs.

Refs #37

- Changed magic constant to 1.2
- Info about total server memory consumption

Refs #37

- Added malloc overhead (sizeof(size_t) for each allocation, according to libc's malloc.c source file.
- Added minimal malloc chunk size (sizeof(size_t) * 3)
- With magic constant of 1.15, results are OK, but needs more tweaking, only tested with one set of RRs and only on a 64bit system.

Refs #37

 - Used for ahtable size estimation
 - Estimate still not precise, but getting close
 - Added malloc wrapper for trie, but allocated sizes are negligible

  Refs #37