Aubit 4GL SVN-Code

README: install line not tied to a version

VS Code extension: prebuilt aubit4gl-0.3.0.vsix for easy install (recommit when the extension changes)

VS Code extension 0.3.0

libesql: INT8/SERIAL8 native copy converts through ifx_int8cvasc/toasc (ifx_int8_t is 12 bytes, not Aubit's 64 bit long; every INT8 was NULL)

esqlc (LEXTYPE=EC): SERIAL8 host variables and native copy (was <<notset>>)

esqlc (LEXTYPE=EC): declare LVARCHAR host variables as char buffers (was <<notset>>, a syntax error in esqlc)

VS Code call graph: fix mocked test, single-main case, add program-selection test

VS Code call graph: the active file's program (its call closure), not the whole workspace

VS Code: toolbar buttons (run, debug, lint, web UI, menu), overflow menu, status bar menu

VS Code: Lint Workspace shows progress and can be cancelled