pgsql: Be less destructive, signal then clear instead.
SSL.ServerConnection: Fixed support for resuming sessions.

It's not a good idea to send the CCS packet twice...
Image.SVG: Fixed leak on error in _decode().

The options mapping could leak in serveral error conditions.

Also adjusts some related error messages.
Build [Image.SVG]: Fixed warning.
pgsql: Pull two Stdio.Buffers apart.
This kludges around a parser bug in Pike 8.1.

It's a bit difficult to create an isolated testcase out of this.
Somebody please look into this.

Without this patch, the following test results in the error below:

> object b=Sql.pgsql("");
/usr/local/pike/8.1.0/lib/modules/Sql.pmod/pgsql.pike:696:switch(): Conditional expression is void.