Cleanup paths in pdns-recursor.init.d

prefix was unused, the others had a trailing slash, leading to process
command lines like "/usr/sbin//pdns_recursor".
Add exit codes to pdns-recursor init script

Fixes #676.
Merge pull request #785 from zeha/f/init.d-fixup

Cleanup paths in pdns-recursor.init.d
Merge pull request #849 from zeha/f/issue-676

Add exit codes to pdns-recursor init script
fix table layout
gitignore
Basic TSIG key management infrastructure
GSQL backend support for TSIG key management
GMySQL support for TSIG key management
Goracle backend implementation
Oraclebackend support for TSIG key management
SQLite3 support for TSIG key management
gpgsqlbackend support for TSIG key management
Style fixes and now does REPLACE instead of INSERT
Support for TSIG key management
Complete test suite for TSIG key management
BIND backend support for TSIG Key management
Renamed generate-tsig-key to create-tsig-key
Fixed enable/disable-tsig-key usage
Added master/slave parameter for enable/disable-tsig-key
Documentation for TSIG feature
Regression tests