* 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

 * symbols are extracted from C header files by a TECO macro
 * macro is executed using a "minimal" version of SciTECO that does not include symbols (uses gcc's weak symbols)
 * the generated C++ code contains the symbol-name-to-define mapping as a constant sorted array and initializes the appropriate SymbolList object
 * a symbol lookup is super fast using a simple binary search in the symbol lists
 * except for object initialization, no there's no overhead for keeping the symbol lists!
 * build process is complicated by introduction of bootstrapping via sciteco-minimal