When you install aolserver, it recreates the tcl lib directory and includes the default packages that are part of the tcl distribution. I think you can just copy the TclCurl package there and it should work with package require. As an example, I have aolserver installed in /usr/local/aolserver, and the tcl libs are at /usr/local/aolserver/lib/tcl8.3, so if I were to install TclCurl, I would copy the tclcurl package directory to /usr/local/aolserver/lib/tcl8.3.
This should work with package require, but if libcurl is not thread-safe, you will still need to create a wrapper for the TclCurl commands that serializes access using a mutex.
