relax the max width, fix the long descriptions

Author: vladak

opengrok-indexer/src/main/java/org/opengrok/indexer/index/Indexer.java

@@ -570,13 +570,14 @@ public static String[] parseOptions(String[] argv) throws ParseException {
             parser.on("-H", "--history", "Enable history.").execute(v -> cfg.setHistoryEnabled(true));
 
             parser.on("--historyThreads", "=number", Integer.class,
-                    "The number of threads to use for history cache generation on repository level. " +
+                    "The number of threads to use for history cache generation on repository level. ",
                     "By default the number of threads will be set to the number of available CPUs.",
                     "Assumes -H/--history.").execute(threadCount ->
                     cfg.setHistoryParallelism((Integer) threadCount));
 
             parser.on("--historyFileThreads", "=number", Integer.class,
-                    "The number of threads to use for history cache generation when dealing with individual files.",
+                    "The number of threads to use for history cache generation ",
+                    "when dealing with individual files.",
                     "By default the number of threads will be set to the number of available CPUs.",
                     "Assumes -H/--history.").execute(threadCount ->
                     cfg.setHistoryFileParallelism((Integer) threadCount));

opengrok-indexer/src/main/java/org/opengrok/indexer/util/OptionParser.java

@@ -156,7 +156,7 @@ void setPattern(String pattern) {
             valuePattern = Pattern.compile(pattern);
         }
 
-        public static final int MAX_DESCRIPTION_LINE_LENGTH = 72;
+        public static final int MAX_DESCRIPTION_LINE_LENGTH = 80;
 
         void addDescription(String description) {
             if (description.length() > MAX_DESCRIPTION_LINE_LENGTH) {