Wrap columnar tables in "clang-format off/on"

These tables have aligned comments, so we don't want clang-format to
mess with them.

src/lib/confmgt/unitparse.c

@@ -21,6 +21,7 @@
 
 /** Table to map the names of memory units to the number of bytes they
  * contain. */
+// clang-format off
 const struct unit_table_t memory_units[] = {
   { "",          1 },
   { "b",         1<< 0 },
@@ -65,9 +66,11 @@ const struct unit_table_t memory_units[] = {
   { "tbit",      UINT64_C(1)<<37 },
   { NULL, 0 },
 };
+// clang-format on
 
 /** Table to map the names of time units to the number of seconds they
  * contain. */
+// clang-format off
 const struct unit_table_t time_units[] = {
   { "",         1 },
   { "second",   1 },
@@ -84,9 +87,11 @@ const struct unit_table_t time_units[] = {
   { "months",   2629728, },
   { NULL, 0 },
 };
+// clang-format on
 
 /** Table to map the names of time units to the number of milliseconds
  * they contain. */
+// clang-format off
 const struct unit_table_t time_msec_units[] = {
   { "",         1 },
   { "msec",     1 },
@@ -104,6 +109,7 @@ const struct unit_table_t time_msec_units[] = {
   { "weeks",    7*24*60*60*1000 },
   { NULL, 0 },
 };
+// clang-format on
 
 /** Parse a string <b>val</b> containing a number, zero or more
  * spaces, and an optional unit string.  If the unit appears in the

src/lib/osinfo/uname.c

@@ -61,6 +61,7 @@ get_uname,(void))
      */
     /* Windows Server 2019 is indistinguishable from Windows Server 2016
      * using GetVersionEx().
+// clang-format off
     { 10,  0, NULL,                        "Windows Server 2019" }, */
     { 10,  0, "Windows 10",                "Windows Server 2016" },
     {  6,  3, "Windows 8.1",               "Windows Server 2012 R2" },
@@ -73,6 +74,7 @@ get_uname,(void))
     {  5,  0, "Windows 2000 Professional", "Windows 2000 Server" },
     /* Earlier versions are not supported by GetVersionEx(). */
     {  0,  0, NULL,                        NULL }
+// clang-format on
         };
         memset(&info, 0, sizeof(info));
         info.dwOSVersionInfoSize = sizeof(info);