bug 1273: replace backtick operators with shell_exec

+ fix 1 missing escapeshellarg
Commands used to locate:
1.
find includes -type f -name '*.php' -exec cat {} \; \
| tr '\n' '?' | sed 's/\(\$query .\?= \|\
mysql_query(\|query_init (\)"\([^"]\|".\(\(intval\|mysql_real_escape_string\)\
(\$[^\$)]\+)\|\$_SESSION\(\['_config'\]\['user'\]\['Q[1-5]'\]\
\|['_config']['disablelogin']\)\)[ ?]*."\)*"/mysql-substitute/g'\
| tr '?' '\n' |  grep --color=always "\`"|less -r

and reviewing the queries by hand.

This command replaces out strings obviously looking
like sql_queries and then outputting al remaining backticks:

starting with "$query = ,mysql_query, ..."
and are only interrupted by "safe" calls:
- mysql_real_escape_string
- intval
- pre_escaped session variables

(This command may also be used for locating
 bad escaped sql_queries)

2. grep -r "\`\(grep\|/\|echo\|dig\|openssl\|gpg\|rm\|../\)" www includes pages \
| grep -v '\(from\|update\|into\) `gpg'

0 files changed, 0 insertions, 0 deletions