maint: Eliminate accidental double spaces in code. * make_int.cc, file-editor-tab.h, file-editor.cc, shortcut-manager.h, __contourc__.cc, cellfun.cc, debug.cc, errwarn.h, graphics.in.h, jit-ir.h, oct-stream.cc, quadcc.cc, qz.cc, sparse-xdiv.cc, symtab.cc, __init_fltk__.cc, ov-class.cc, ov-float.h, ov-scalar.h, op-int.h, CNDArray.cc, CSparse.cc, MSparse.cc, Sparse.cc, boolNDArray.cc, chNDArray.cc, dNDArray.cc, dSparse.cc, fCNDArray.cc, fNDArray.cc, int16NDArray.cc, int32NDArray.cc, int64NDArray.cc, int8NDArray.cc, intNDArray.cc, uint16NDArray.cc, uint32NDArray.cc, uint64NDArray.cc, uint8NDArray.cc, randgamma.h, randmtzig.h, randpoisson.c, randpoisson.h, Sparse-op-defs.h, oct-time.cc, kpse.cc, lo-array-errwarn.h, lo-ieee.h, del2.m, num2str.m, __isequal__.m, lookfor.m, hsv2rgb.m, colorspace_conversion_revert.m, fminbnd.m, create_pkgadddel.m, shading.m, struct2hdl.m, gallery.m, discrete_cdf.m, kolmogorov_smirnov_test.m, assert.m, datestr.m, classes.tst, jit.tst: Eliminate accidental double spaces in code.

--- a/liboctave/array/Sparse.cc	Tue Mar 29 21:13:22 2016 -0700
+++ b/liboctave/array/Sparse.cc	Wed Mar 30 15:19:12 2016 -0700
@@ -815,7 +815,7 @@
 
           octave_idx_type kk = 0;
           retval.xcidx (0) = 0;
-          // quotient and remainder of  i * old_nr divided by new_nr
+          // Quotient and remainder of i * old_nr divided by new_nr.
           // Track them individually to avoid overflow (bug #42850).
           octave_idx_type i_old_qu = 0;
           octave_idx_type i_old_rm = static_cast<octave_idx_type> (-old_nr);
@@ -1780,7 +1780,7 @@
     }
   else if (idx_j.is_colon ())
     {
-      // This requires  uncompressing columns, which is generally costly,
+      // This requires uncompressing columns, which is generally costly,
       // so we rely on the efficient transpose to handle this.
       // It may still make sense to optimize some cases here.
       retval = transpose ();