Personalize fonts

When the fonts distributed with texlive with same family name
as ours are also managed by fontconfig, Qt is not able to
discriminate ours by the style only. In order to be sure Qt
will load our fonts, we change the foundry name from 'PfEd'
to 'LyEd' and augment the font family name with this foundry
name. This only works on *nix, because adding a foundry name
seemingly breaks things on Windows. However, this is a *nix
only problem, seemingly.

lib/fonts/cmex10.sfd

@@ -50,6 +50,7 @@ OS2SupXOff: 0
 OS2SupYOff: 0
 OS2StrikeYSize: 102
 OS2StrikeYPos: 530
+OS2Vendor: 'LyEd'
 OS2UnicodeRanges: 00000000.00000000.00000000.00000000
 MarkAttachClasses: 1
 DEI: 91125

lib/fonts/cmmi10.sfd

@@ -50,7 +50,7 @@ OS2SupXOff: 0
 OS2SupYOff: 1175
 OS2StrikeYSize: 102
 OS2StrikeYPos: 530
-OS2Vendor: 'PfEd'
+OS2Vendor: 'LyEd'
 OS2CodePages: 00000001.00000000
 OS2UnicodeRanges: 00000000.00000000.00000000.00000000
 MarkAttachClasses: 1

lib/fonts/cmr10.sfd

@@ -50,6 +50,7 @@ OS2SupXOff: 0
 OS2SupYOff: 1186
 OS2StrikeYSize: 102
 OS2StrikeYPos: 530
+OS2Vendor: 'LyEd'
 OS2UnicodeRanges: 00000000.00000000.00000000.00000000
 DEI: 91125
 TtTable: prep

lib/fonts/cmsy10.sfd

@@ -50,7 +50,7 @@ OS2SupXOff: 0
 OS2SupYOff: 723
 OS2StrikeYSize: 102
 OS2StrikeYPos: 530
-OS2Vendor: 'PfEd'
+OS2Vendor: 'LyEd'
 OS2CodePages: 00000001.00000000
 OS2UnicodeRanges: 00000000.00000000.00000000.00000000
 MarkAttachClasses: 1

lib/fonts/dsrom10.sfd

@@ -52,7 +52,7 @@ OS2SupXOff: 0
 OS2SupYOff: 480
 OS2StrikeYSize: 49
 OS2StrikeYPos: 258
-OS2Vendor: 'PfEd'
+OS2Vendor: 'LyEd'
 OS2CodePages: 00000001.00000000
 OS2UnicodeRanges: 00000001.00000000.00000000.00000000
 DEI: 91125

lib/fonts/esint10.sfd

@@ -51,7 +51,7 @@ OS2SupXOff: 0
 OS2SupYOff: 0
 OS2StrikeYSize: 102
 OS2StrikeYPos: 530
-OS2Vendor: 'PfEd'
+OS2Vendor: 'LyEd'
 OS2CodePages: 40000001.80d40000
 OS2UnicodeRanges: 00000003.00000000.00000000.00000000
 Lookup: 4 0 1 "'liga' Ligature standard in Latin lookup 0" { "'liga' Ligature standard in Latin lookup 0 subtable"  } ['liga' ('latn' <'dflt' > ) ]

lib/fonts/eufm10.sfd

@@ -50,6 +50,7 @@ OS2SupXOff: 0
 OS2SupYOff: 1239
 OS2StrikeYSize: 102
 OS2StrikeYPos: 530
+OS2Vendor: 'LyEd'
 OS2UnicodeRanges: 00000000.00000000.00000000.00000000
 MarkAttachClasses: 1
 DEI: 91125

lib/fonts/msam10.sfd

@@ -50,7 +50,7 @@ OS2SupXOff: 0
 OS2SupYOff: 0
 OS2StrikeYSize: 102
 OS2StrikeYPos: 530
-OS2Vendor: 'PfEd'
+OS2Vendor: 'LyEd'
 OS2CodePages: 00000001.00000000
 OS2UnicodeRanges: 00000000.00000000.00000000.00000000
 MarkAttachClasses: 1

lib/fonts/msbm10.sfd

@@ -50,7 +50,7 @@ OS2SupXOff: 0
 OS2SupYOff: 721
 OS2StrikeYSize: 102
 OS2StrikeYPos: 530
-OS2Vendor: 'PfEd'
+OS2Vendor: 'LyEd'
 OS2CodePages: 00000001.00000000
 OS2UnicodeRanges: 00000000.00000000.00000000.00000000
 MarkAttachClasses: 1

lib/fonts/rsfs10.sfd

@@ -50,7 +50,7 @@ OS2SupXOff: -101
 OS2SupYOff: 490
 OS2StrikeYSize: 50
 OS2StrikeYPos: 264
-OS2Vendor: 'PfEd'
+OS2Vendor: 'LyEd'
 OS2CodePages: 00000001.00000000
 OS2UnicodeRanges: 80000001.00000000.00000000.00000000
 Lookup: 258 0 0 "'kern' Horizontal Kerning in Latin lookup 0"  {"'kern' Horizontal Kerning in Latin lookup 0 subtable"  } ['kern' ('latn' <'dflt' > ) ]

lib/fonts/wasy10.sfd

@@ -52,7 +52,7 @@ OS2SupXOff: 0
 OS2SupYOff: 0
 OS2StrikeYSize: 51
 OS2StrikeYPos: 265
-OS2Vendor: 'PfEd'
+OS2Vendor: 'LyEd'
 OS2CodePages: 00000001.00000000
 OS2UnicodeRanges: 00000001.00000000.00000000.00000000
 MarkAttachClasses: 1

src/frontends/qt/GuiFontLoader.cpp

@@ -207,7 +207,14 @@ QFont symbolFont(QString const & family, bool * ok)
 	upper[0] = family[0].toUpper();
 
 	QFont font;
+#if defined Q_WS_X11 || defined(QPA_XCB)
+	// On *nix we have to also specify the foundry to be able to
+	// discriminate our fonts when the texlive fonts are managed by
+	// fontconfig. Unfortunately, doing the same on Windows breaks things.
+	font.setFamily(family + QLatin1String(" [LyEd]"));
+#else
 	font.setFamily(family);
+#endif
 #if QT_VERSION >= 0x040800
 	font.setStyleName("LyX");