* makes use of Scintilla selections, so their usage has been improved
 * search commands preserve selection on termination (escape)
 * selections are restored on rubout
 * search-replace command makes use of the Insert command's state (may serve as a base class now)
   but does not pop additional values from stack (like "I" does)

 * new syntax is <[lParam,[wParam,[msg]]]>ES[msg[,wParam[,lParam]]]$[lParam string]$
 * symbols are matched case-insensitive, the leading SCI_ for message symbols may be omitted
 * added support for more multiple string arguments (for commands in general)
 * fixed "C conditional: succeeds for every alpanumeric character, dot, dollar or underscore
 * added SCLEX_ and SCE_ constants as symbols
 * updated teco.ini: using symbolic names is preferred since that way code does not depend on the current Scintilla version

 * uncommon radices are allowed but reading stops on non-alphanumeric characters (and characters on allowed by the current radix)

 * munged files use the same local Q-Registers as commandline
 * :M calls macro without new set of local registers (local register names refer to the parent macro level)
 * only .x names accepted at the moment. for string building characters, this will like stay that way (cannot refer to extended/long names)

this eases writing nested macros

some method to reenable it will be developed in the future (perhaps using a separate command, or a special modifier which reverses a string commands default handling of building character)