maint: Use '! expr' rather than '!expr' to conform to coding guidelines. * dialog.h, documentation-dock-widget.cc, files-dock-widget.cc, find-files-dialog.cc, file-editor-tab.cc, file-editor.cc, find-dialog.cc, octave-qscintilla.cc, main-window.cc, parser.cc, resource-manager.cc, workspace-view.cc, data.cc, dlmread.cc, gl-render.cc, gl2ps-renderer.cc, graphics.cc, graphics.in.h, ls-hdf5.cc, ls-mat5.cc, ls-oct-binary.cc, lsode.cc, mappers.cc, pt-jit.cc, regexp.cc, spparms.cc, symtab.h, utils.cc, zfstream.cc, __eigs__.cc, __glpk__.cc, __init_fltk__.cc, ccolamd.cc, colamd.cc, ov-base-diag.cc, ov-base-int.cc, ov-base-sparse.cc, ov-bool-mat.cc, ov-bool-sparse.cc, ov-bool.cc, ov-class.cc, ov-cx-sparse.cc, ov-fcn-handle.cc, ov-fcn-inline.cc, ov-java.cc, ov-perm.cc, ov-re-sparse.cc, ov-str-mat.cc, ov-struct.cc, ov.cc, pt-mat.cc, Array.cc, Array.h, CMatrix.cc, CSparse.cc, MatrixType.cc, PermMatrix.cc, Sparse.h, dMatrix.cc, dSparse.cc, fCMatrix.cc, fMatrix.cc, idx-vector.cc, CollocWt.h, SparseCmplxLU.cc, SparseCmplxQR.cc, SparseQR.cc, SparsedbleLU.cc, base-qr.cc, eigs-base.cc, oct-fftw.cc, randmtzig.c, sparse-dmsolve.cc, kpse.cc, lo-regexp.cc, oct-locbuf.h, url-transfer.cc, url-transfer.h, bitset.m, interp2.m, __isequal__.m, inpolygon.m, questdlg.m, help.m, compare_versions.m, substruct.m, configure_make.m, whitebg.m, __marching_cube__.m, struct2hdl.m, polyfit.m, spline.m, unique.m, svds.m, ellipke.m, binoinv.m, hygepdf.m, nbininv.m, poissinv.m, tcdf.m, unidcdf.m, unidpdf.m, dec2base.m, assert.m, weekday.m, mkoctfile.in.cc: maint: Use '! expr' rather than '!expr' to conform to coding guidelines.

--- a/libinterp/corefcn/gl-render.cc	Sun Dec 20 08:19:58 2015 -0800
+++ b/libinterp/corefcn/gl-render.cc	Sun Dec 20 10:15:02 2015 -0800
@@ -1193,7 +1193,7 @@
       if (yticklabels.numel () > 0)
         {
           int halign = (ystate == AXE_HORZ_DIR
-                        ? 1 : (!xyzSym || y2Dright ? 0 : 2));
+                        ? 1 : (! xyzSym || y2Dright ? 0 : 2));
           int valign = (ystate == AXE_VERT_DIR ? 1 : 2);
 
           if (tick_along_z)