Remove all existing native *swt* libraries before copying new

If 'make_common.mak' is changed manually (e.g. during new release-cycle
preparation), the code in 'Check if SWT-binaries build is needed' stage,
that is supposed to delete native libraries, doesn't delete anything as
it relies on getSWTVersions() that reads the (already changed) versions.

Adjust the file-pattern to delete every *swt* library file stored in git
instead, regardless of its exact version.

Fixes #1095

Jenkinsfile

@@ -150,9 +150,10 @@ pipeline {
 									'comma_ver='+swtVersions['comma_ver'], "new_comma_ver=${swtVersions['maj_ver']},${swtVersions['min_ver']},${swtVersions['new_rev']},0" ]) {
 								sh '''
 									# Delete native binaries to be replaced by subsequent binaries build
-									rm -f binaries/org.eclipse.swt.gtk.*/lib*-${swt_version}.so
-									rm -f binaries/org.eclipse.swt.win32.*/*-${swt_version}.dll
-									rm -f binaries/org.eclipse.swt.cocoa.*/lib*-${swt_version}.jnilib
+									swtNativeLibName='swt-*-+([0-9])r+([0-9])'
+									rm -f binaries/org.eclipse.swt.gtk.*/lib${swtNativeLibName}.so
+									rm -f binaries/org.eclipse.swt.win32.*/${swtNativeLibName}.dll
+									rm -f binaries/org.eclipse.swt.cocoa.*/lib${swtNativeLibName}.jnilib
 									
 									echo "Incrementing version from ${swt_version} to ${new_version}; new comma_ver=${new_comma_ver}"