[PUSHED/OBVIOUS] Fix some spelling errors.

diff --git a/gdb/btrace.c b/gdb/btrace.c
index 0c7becd349..bbf8749649 100644
--- a/gdb/btrace.c
+++ b/gdb/btrace.c
@@ -1533,7 +1533,7 @@  btrace_compute_ftrace_1 (struct thread_info *tp,
       return;
     }
 
-  internal_error (__FILE__, __LINE__, _("Unkown branch trace format."));
+  internal_error (__FILE__, __LINE__, _("Unknown branch trace format."));
 }
 
 static void
@@ -1791,7 +1791,7 @@  btrace_stitch_trace (struct btrace_data *btrace, struct thread_info *tp)
       return -1;
     }
 
-  internal_error (__FILE__, __LINE__, _("Unkown branch trace format."));
+  internal_error (__FILE__, __LINE__, _("Unknown branch trace format."));
 }
 
 /* Clear the branch trace histories in BTINFO.  */
diff --git a/gdb/charset.c b/gdb/charset.c
index 480ed366a4..5cfd2d8030 100644
--- a/gdb/charset.c
+++ b/gdb/charset.c
@@ -989,7 +989,7 @@  intermediate_encoding (void)
   /* Not valid, free the allocated memory.  */
   xfree (result);
   /* No valid charset found, generate error here.  */
-  error (_("Unable to find a vaild charset for string conversions"));
+  error (_("Unable to find a valid charset for string conversions"));
 }
 
 #endif /* USE_INTERMEDIATE_ENCODING_FUNCTION */
diff --git a/gdb/nat/linux-btrace.c b/gdb/nat/linux-btrace.c
index 03fc85e2ec..e972a07227 100644
--- a/gdb/nat/linux-btrace.c
+++ b/gdb/nat/linux-btrace.c
@@ -889,7 +889,7 @@  linux_read_pt (struct btrace_data_pt *btrace,
       return BTRACE_ERR_NONE;
     }
 
-  internal_error (__FILE__, __LINE__, _("Unkown btrace read type."));
+  internal_error (__FILE__, __LINE__, _("Unknown btrace read type."));
 }
 
 /* See linux-btrace.h.  */
diff --git a/gdb/python/py-record-btrace.c b/gdb/python/py-record-btrace.c
index a3c3a546d7..08613a856d 100644
--- a/gdb/python/py-record-btrace.c
+++ b/gdb/python/py-record-btrace.c
@@ -808,7 +808,7 @@  recpy_bt_goto (PyObject *self, PyObject *args)
 
 struct PyMethodDef btpy_list_methods[] =
 {
-  { "count", btpy_list_count, METH_O, "count number of occurences"},
+  { "count", btpy_list_count, METH_O, "count number of occurrences"},
   { "index", btpy_list_index, METH_O, "index of entry"},
   {NULL}
 };
diff --git a/gdb/record-btrace.c b/gdb/record-btrace.c
index 33ee4e9d81..619ecde025 100644
--- a/gdb/record-btrace.c
+++ b/gdb/record-btrace.c
@@ -541,7 +541,7 @@  record_btrace_print_conf (const struct btrace_config *conf)
       return;
     }
 
-  internal_error (__FILE__, __LINE__, _("Unkown branch trace format."));
+  internal_error (__FILE__, __LINE__, _("Unknown branch trace format."));
 }
 
 /* The info_record method of target record-btrace.  */
diff --git a/gdb/testsuite/lib/gdb.exp b/gdb/testsuite/lib/gdb.exp
index cb5a3f7aea..2d230b791e 100644
--- a/gdb/testsuite/lib/gdb.exp
+++ b/gdb/testsuite/lib/gdb.exp
@@ -3877,7 +3877,7 @@  proc gdb_compile {source dest type options} {
 	    # Force output to unbuffered mode, by linking in an object file
 	    # with a global contructor that calls setvbuf.
 	    #
-	    # Compile the special object seperatelly for two reasons:
+	    # Compile the special object separately for two reasons:
 	    #  1) Insulate it from $options.
 	    #  2) Avoid compiling it for every gdb_compile invocation,
 	    #  which is time consuming, especially if we're remote